1890540008 has 16 divisors (see below), whose sum is σ = 4051157280. Its totient is φ = 810231408.

The previous prime is 1890539983. The next prime is 1890540011. The reversal of 1890540008 is 8000450981.

It is a self number, because there is not a number n which added to its sum of digits gives 1890540008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16879766 + ... + 16879877.

It is an arithmetic number, because the mean of its divisors is an integer number (253197330).

Almost surely, 2^1890540008 is an apocalyptic number.

It is an amenable number.

1890540008 is an abundant number, since it is smaller than the sum of its proper divisors (2160617272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1890540008 is a wasteful number, since it uses less digits than its factorization.

1890540008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33759656 (or 33759652 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1890540008 is about 43480.3404770478. The cubic root of 1890540008 is about 1236.5033314827.

Adding to 1890540008 its reverse (8000450981), we get a palindrome (9890990989).

The spelling of 1890540008 in words is "one billion, eight hundred ninety million, five hundred forty thousand, eight".